June, 1898.] Dyar : New Species and Larwe of Sawflies. 131 
Stage VII. —(Ultimate.) Not smooth, the tubercles represented by 
small distinct cones; not shining, all very light whitish green, very 
much whiter than in the feeding stages, slightly wrinkly annulate, no 
marks, no tarry shades. Larva as high as wide, robust. Spins a rather 
fine brown cocoon either in the earth or after boring in decayed wood. 
Single brooded. The larva is solitary, rarely several together, resting 
on the upper side of the leaves of Q. tinctoria early in June. They are 
unusually sluggish, often feeding upon a single leaf. 
Others were found on the white oak ( Q. alba ) which appeared less 
robust and had a pale space on the spines at the bases of the limbs; but 
the imagines seem indistinguishable from the others. 
Brookhaven, Bellport and Yaphank, Long Island, N. Y. 
Periclista emarginata MacGillivray. 
?. Black, clypeus emarginate, labrum pale; abdomen with the tips 
of segments lined with whitish below, the last segment brownish ; pro¬ 
thorax largely and tegulae white; legs pale, the femora brown, except 
narrowly on the under side; tips of tarsi dusky. Under wings with one 
middle cell or none. 
Two 9 9 bred from larvae similar to those described (Can. Ent., 
xxvi, 185;, which produced the $ type. 
Stage IV .—As in next stage, spines all pale; head .7 mm. 
Stage V .—Head 1.1 mm., a shade above ocelli, the patch in clypeus 
single, transverse, later double. 
Body green, spines all pale, furcate, arranged as in the preceding 
species of Periclista. 
Stages VI and VII have been published. 
Found on Q. coccinea at Pelham Manor and Van Cortlandt Park, 
N. Y., in May. 
Periclista subtruncata, sp. nov. 
9.Similar to the preceding, but the clypeus shallowly emarginate. 
Shining black, prothorax narrowly and ’tegulae white; abdomen entirely 
black. Legs brown, coxae and basal two-thirds of femora blackish, tarsi 
dusky. Sculpturing essentially as in emarginata , but the vertical groove 
on head shows a tendency to cross the transverse one between the pos¬ 
terior ocelli. Length, 5.5 mm. One 9 . 
Not strikingly distinct in either imago or larva from P. emarginata, 
but both Mr. MacGillivray and Mr. Ashmead have compared the flies 
and do not consider them the same. 
Stage IV .—Head pale brown, dotted on a greenish ground, a black 
